From: Julia Lawall <julia.law...@lip6.fr> Clk_prepare_enable and clk_disable_unprepare combine clk_prepare and clk_enable, and clk_disable and clk_unprepare. They make the code more concise, and ensure that clk_unprepare is called when clk_enable fails.
A simplified version of the semantic patch that introduces calls to these functions is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression e; @@ - clk_prepare(e); - clk_enable(e); + clk_prepare_enable(e); @@ expression e; @@ - clk_disable(e); - clk_unprepare(e); + clk_disable_unprepare(e); // </smpl> Signed-off-by: Julia Lawall <julia.law...@lip6.fr> --- arch/arm/mach-at91/gpio.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/arch/arm/mach-at91/gpio.c b/arch/arm/mach-at91/gpio.c index be42cf0..7760f35 100644 --- a/arch/arm/mach-at91/gpio.c +++ b/arch/arm/mach-at91/gpio.c @@ -956,19 +956,14 @@ static int __init at91_gpio_setup_clk(int idx) goto err; } - if (clk_prepare(at91_gpio->clock)) - goto clk_prep_err; - /* enable PIO controller's clock */ - if (clk_enable(at91_gpio->clock)) { + if (clk_prepare_enable(at91_gpio->clock)) { pr_err("at91_gpio.%d, failed to enable clock, ignoring.\n", idx); - goto clk_err; + goto clk_prep_err; } return 0; -clk_err: - clk_unprepare(at91_gpio->clock); clk_prep_err: clk_put(at91_gpio->clock); err: -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
